rm boost::mutex from MME

srsepc/src/mme/mme.cc

@@ -29,13 +29,12 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/sctp.h>
-#include <boost/thread/mutex.hpp>
 #include "mme/mme.h"
 
 namespace srsepc{
 
 mme*          mme::m_instance = NULL;
-boost::mutex  mme_instance_mutex;
+pthread_mutex_t mme_instance_mutex = PTHREAD_MUTEX_INITIALIZER;
 
 mme::mme():
   m_running(false)
@@ -52,21 +51,23 @@ mme::~mme()
 mme*
 mme::get_instance(void)
 {
-  boost::mutex::scoped_lock lock(mme_instance_mutex);
+  pthread_mutex_lock(&mme_instance_mutex);
   if(NULL == m_instance) {
     m_instance = new mme();
   }
+  pthread_mutex_unlock(&mme_instance_mutex);
   return(m_instance);
 }
 
 void
 mme::cleanup(void)
 {
-  boost::mutex::scoped_lock lock(mme_instance_mutex);
+  pthread_mutex_lock(&mme_instance_mutex);
   if(NULL != m_instance) {
     delete m_instance;
     m_instance = NULL;
   }
+  pthread_mutex_unlock(&mme_instance_mutex);
 }
 
 int